How do I find my questions that I posted?

Look in your profile, click subscriptions and the hit the filter button. You can see posts you've authored, participated in or subscribed to. If you can't see one of your posts then it's might be because the mods have removed it. If the mods remove a post you authored then you will get an email notifying you of it. If they remove a post that you contributed to but weren't the original author you don't get any notification.

The other reason you might not be able to find one of your posts is if it's very old.

For threads from more than approximately 3 months ago, try using an external search engine instead, with keywords to limit results to this site. These older ones wouldn’t show up through your profile.

site:discussions.apple.com "tammytalking"